WO1999055479A1 - A cutting tool assembly and a cutting insert for use therein - Google Patents

A cutting tool assembly and a cutting insert for use therein Download PDF

Info

Publication number
WO1999055479A1
WO1999055479A1 PCT/IL1999/000213 IL9900213W WO9955479A1 WO 1999055479 A1 WO1999055479 A1 WO 1999055479A1 IL 9900213 W IL9900213 W IL 9900213W WO 9955479 A1 WO9955479 A1 WO 9955479A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling member
tool holder
cutting insert
wings
cutting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IL1999/000213
Other languages
English (en)
French (fr)
Inventor
Gil Hecht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iscar Ltd
Original Assignee
Iscar Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iscar Ltd filed Critical Iscar Ltd
Priority to HU0101630A priority Critical patent/HUP0101630A3/hu
Priority to AU34411/99A priority patent/AU3441199A/en
Priority to BR9910001-0A priority patent/BR9910001A/pt
Priority to JP2000545663A priority patent/JP4109419B2/ja
Priority to CA002330427A priority patent/CA2330427C/en
Priority to EP99916019A priority patent/EP1075340B1/en
Publication of WO1999055479A1 publication Critical patent/WO1999055479A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B23B27/1614—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert
    • B23B27/1622—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert characterised by having a special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2240/00—Details of connections of tools or workpieces
    • B23B2240/04—Bayonet connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
    • Y10T407/2274—Apertured tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
    • Y10T407/2274—Apertured tool
    • Y10T407/2276—Apertured tool with means projecting through aperture to force tool laterally against reaction surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
    • Y10T407/228—Rotatable cam clamp element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges

Definitions

  • the present invention relates to a cutting tool assembly of the kind having a replaceable cutting insert.
  • Such cutting tool assemblies have long been known particularly where the cutting insert is replaceably retained in or on a tool holder by screw clamping. With most of such known assemblies handling difficulties are often encountered when removing or replacing the cutting insert, seeing that this usually involves loosening, removal and screw insertion of the clamping screw, whibt at the same time holding the cutting insert.
  • a cutting tool comprising a cutting insert and a tool holder in which the cutting insert is releasably retained.
  • the cutting insert has a peripheral cutting portion and a central coupling portion constituted by a through bore formed in the body of the cutting insert, the through bore having a plurality of spaced apart, peripherally located, radially directed support wings.
  • the tool holder has a coupling member mounted therein so as to be axially displaceable with respect thereto, the coupling member having a corresponding plurality of radially extending abutment wings for interacting with the support wings of the cutting insert.
  • the cutting tool is assembled by the insertion of the coupling member of the tool holder into the cavity of the cutting insert with the abutment wings pass'ng respectively between successive support wings, rotating the cutting insert relative to the tool holder until the abutment wings overlay the support wings and axially displacing the coupling member of the tool holder in the inward direction thereof until the abutment wings clampingly abut the support wings.
  • a cutting tool assembly having a longitudinal axis and comprising a cutting insert to be releasably retained in a tool holder, said cutting insert being formed with a through bore having spaced apart, peripherally located, radially directed support wings; said tool holder being provided with a coupling member having a plurality of corresponding radially extending abutment wings for interacting with the support wings of the cutting insert, said coupling member of the tool holder being rotatable and axially displaceable with respect thereto, the arrangement being such that a retaining coupling of said cutting insert to said tool holder is effected upon insertion of the coupling member of the tool holder into the through bore of the cutting insert with said abutment wings passing between and beyond successive support wings, rotating said coupling member so that said abutment wings are aligned with and overlay said support wings whilst axially displacing said coupling member until said abutment wings clamp
  • the cutting tool assembly is further provided with displacing means for the rotation and inward and outward axial displacement of said coupling member of the tool holder.
  • displacement means may, for example, be in the form a screw threadingly mounted in said tool holder so as to act on said coupling member, whereby rotation of said screw in opposite senses results in said rotation of the coupling member of the tool holder and said inward and outward axial displacements thereof.
  • a cutting insert for releasable mounting on a tool holder having a coupling member formed with a radially extending abutment wings, said cutting insert having a substantially polygonal shape and a through bore formed with corresponding peripherally located and radially directed support wings 3 which are so spaced apart as to enable a free passage of said abutment wings therebetween.
  • Fig. 1 is an exploded perspective view of a cutting tool assembly in accordance with the invention, with a tool holder thereof shown transversely sectioned;
  • Figs. 2, 3 and 4 show the tool assembly shown in Fig. 1 in successive stages of coupling and clamping of a cutting insert to the tool holder, the cutting insert and the tool holder being shown transversely sectioned.
  • the cutting tool assembly comprises a tool holder 1 in which is formed a square cutting insert receiving pocket 2 adapted to receive a cutting insert 3 of correspondingly square shape.
  • the cutting insert is retained by means of a clamping mechanism to be described below.
  • a cylindrical bore 4 Extending downwardly through the tool holder 1 and opening out into the pocket 2 is a cylindrical bore 4 having at its lowermost end a shoulder 5. Extending laterally through the tool holder 1 is a threaded bore 6 which opens into the cylindrical bore 4. A displacing screw 7, to be threadingly engaged within the threaded bore 6, is formed at one end thereof with a hexagonal driving recess 8 and, at the opposite end thereof, with a conically shaped tip 9.
  • An elongated coupling member 11 comprises a cylindrical body portion 12 formed integrally via a narrow neck portion 13 with an end coupling portion 14 having a plurality of radially extending, equi-angularly distributed 4
  • the wings 15 are in the form of protrusions tapering inwardly towards the neck portion 13.
  • a groove 16 is formed in the body portion 12.
  • the groove 16 extends spirally upwards toward the neck portion 13, whilst broadening and deepening.
  • the spiral groove 16 merges at its end adjacent the narrow neck portion 13 with an enlarged, conically shaped locking recess 17.
  • the tool assembly furthermore comprises a biasing compression spring 18.
  • the cutting insert 3 has a peripheral cutting portion with four indexable cutting edges and a coupling element 19 defining a centrally-located through bore 21 having a plurality of spaced apart peripherally located axially extending radially-directed support wings 22 which are set downwardly with respect to the upper surface 20 of the cutting insert 3 and which are respectively separated from each other by throughgoing channel ways 23.
  • Each wing 22 has an axially extending lower portion 22' merging with an upper portion 22" which tapers outwardly and upwardly towards the upper surface 20.
  • the clamping mechanism Prior to mounting a cutting insert in the tool holder the clamping mechanism has to be assembled. Once assembled, it remains in place for retaining and releasing a cutting insert.
  • the clamping mechanism is assembled as follows:
  • the compression spring 18 is introduced into the cylindrical bore
  • the coupling portion 14 is oriented such that on placing the cutting insert 3 in the insert receiving pocket 2 the abutment wings 5
  • the displacing screw 7 is now rotated in a clockwise direction as shown by the arrow 25, so that it progresses inwardly towards the coupling member 11. Then by virtue of the location of the conical tip 9 of the displacing screw 7 within the spiral groove 16, there is imparted to the coupling member 11 an anti-clockwise rotational displacement as shown by the arrow 26 sufficient to displace the abutment wings 15 from above the channel ways 23 into a position wherein they are superimposed above the upper portion 22"of the support wings 22 of the cutting insert 3.
  • the rotation of the coupling member 11 is accompanied by a downwardly-directed axial displacement, as a result of which the cutting insert 3 is clamped within the pocket 2 by virtue of downwardly-directed forces applied by the abutment wings 15 on the upper portion 22" of the support wings 22.
  • the cutting tool assembly and the cutting insert according to the present invention may have features different from those described above and shown in the drawings.
  • the cutting insert does not need to be square but it may have any other polygonal shape.
  • the tool holder may be of any design suitable for a chosen application.
  • the displacement means may also be of any other appropriate design providing the axial and rotational displacement of the coupling member of the tool holder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Knives (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
PCT/IL1999/000213 1998-04-29 1999-04-22 A cutting tool assembly and a cutting insert for use therein Ceased WO1999055479A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
HU0101630A HUP0101630A3 (en) 1998-04-29 1999-04-22 A cutting tool assembly and a cutting insert for use therein
AU34411/99A AU3441199A (en) 1998-04-29 1999-04-22 A cutting tool assembly and a cutting insert for use therein
BR9910001-0A BR9910001A (pt) 1998-04-29 1999-04-22 Conjunto de ferramenta de corte e inserto de corte para montagem desprendìvel em um porta-ferrameta
JP2000545663A JP4109419B2 (ja) 1998-04-29 1999-04-22 切削工具アセンブリとその中で使用するための切削インサート
CA002330427A CA2330427C (en) 1998-04-29 1999-04-22 A cutting tool assembly and a cutting insert for use therein
EP99916019A EP1075340B1 (en) 1998-04-29 1999-04-22 A cutting tool assembly and a cutting insert for use therein

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL12428298A IL124282A (en) 1998-04-29 1998-04-29 Cutting tool assembly and a cutting insert for use therein
IL124282 1998-04-29

Publications (1)

Publication Number Publication Date
WO1999055479A1 true WO1999055479A1 (en) 1999-11-04

Family

ID=11071444

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1999/000213 Ceased WO1999055479A1 (en) 1998-04-29 1999-04-22 A cutting tool assembly and a cutting insert for use therein

Country Status (13)

Country Link
US (1) US6158928A (https=)
EP (1) EP1075340B1 (https=)
JP (2) JP4109419B2 (https=)
KR (1) KR100596596B1 (https=)
AR (1) AR018200A1 (https=)
AU (1) AU3441199A (https=)
BR (1) BR9910001A (https=)
CA (1) CA2330427C (https=)
CZ (1) CZ20004021A3 (https=)
DE (1) DE29907621U1 (https=)
HU (1) HUP0101630A3 (https=)
IL (1) IL124282A (https=)
WO (1) WO1999055479A1 (https=)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US20100178118A1 (en) * 2009-01-11 2010-07-15 Iscar, Ltd. Cutting Tool Having an Adjustment Mechanism

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IL167179A (en) * 2005-03-01 2009-07-20 Iscar Ltd A tool for removing scratches and cutting for it
JP2006247790A (ja) * 2005-03-11 2006-09-21 Tungaloy Corp スローアウェイ式切削工具
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SE0600337L (sv) * 2006-02-15 2007-07-03 Seco Tools Ab Skär och skärverktyg där skärets monteringshål har två kontaktpunkter mot ett spänndon
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US10307833B2 (en) 2015-02-04 2019-06-04 No Screw Ltd. Cutting tool comprising a cutting tool holder and a cutting insert therefor
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USD1009945S1 (en) 2019-07-10 2024-01-02 Vermeer Manufacturing Company Cutter
KR102070946B1 (ko) * 2019-08-13 2020-01-29 주식회사 팍스랩 팁 드레서용 커터 홀더 조립체
EP3888826A1 (de) * 2020-03-31 2021-10-06 CERATIZIT Austria Gesellschaft m.b.H. Zerspanungswerkzeug und verfahren zum indexieren eines schneideinsatzes
EP4011530B1 (en) * 2020-12-09 2024-05-01 Ceratizit Luxembourg Sàrl Clamping device and cutting tool
JP7757411B2 (ja) * 2021-10-04 2025-10-21 京セラ株式会社 切削工具、及び切削加工物の製造方法
CN116690251B (zh) * 2023-08-05 2023-10-03 南京普莱机电有限公司 一种用于工件夹持的夹具
JP7445230B1 (ja) 2023-10-06 2024-03-07 株式会社タンガロイ 固定部材及び切削工具
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100178118A1 (en) * 2009-01-11 2010-07-15 Iscar, Ltd. Cutting Tool Having an Adjustment Mechanism
US8308398B2 (en) * 2009-01-11 2012-11-13 Iscar, Ltd. Cutting tool having an adjustment mechanism

Also Published As

Publication number Publication date
KR100596596B1 (ko) 2006-07-06
KR20010043119A (ko) 2001-05-25
EP1075340B1 (en) 2013-01-16
CA2330427C (en) 2007-01-09
AU3441199A (en) 1999-11-16
HUP0101630A2 (hu) 2001-09-28
CA2330427A1 (en) 1999-11-04
CZ20004021A3 (cs) 2001-12-12
US6158928A (en) 2000-12-12
HUP0101630A3 (en) 2001-10-29
IL124282A (en) 2001-10-31
JP2002512891A (ja) 2002-05-08
JP3063516U (ja) 1999-11-09
EP1075340A1 (en) 2001-02-14
AR018200A1 (es) 2001-10-31
JP4109419B2 (ja) 2008-07-02
DE29907621U1 (de) 1999-07-15
BR9910001A (pt) 2001-01-16

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